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The Tylenol Murders: How One Bottle Changed America Forever

Sinisterum

Release Date: 07/11/2025

The Chilling Unsolved Mystery of Hinterkaifeck Farm show art The Chilling Unsolved Mystery of Hinterkaifeck Farm

Sinisterum

The boys are back! Caleb, Josh, and Papa Jefe join forces for another bizarre true crime podcast.   Step inside one of Germany’s most chilling unsolved murders—the Hinterkaifeck massacre of 1922. An isolated farmhouse, strange footsteps in the attic, missing keys, and six brutally slain victims… but the killer may have stayed for days after the murders. Was it a vengeful husband thought dead in WWI, a neighbor, or a roaming serial killer? We break down every theory in this gripping, eerie deep dive.   Timestamps 00:11 – The chilling night at Hinterkaifeck 00:58 – The Gruber...

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The Tylenol Murders: How One Bottle Changed America Forever show art The Tylenol Murders: How One Bottle Changed America Forever

Sinisterum

In 1982, seven people in the Chicago area died after taking Tylenol—each capsule laced with deadly cyanide. The case sparked national panic, triggered sweeping changes in packaging laws, and remains unsolved to this day.   In this episode, Caleb is joined by his brother Josh and their dad, Papa Jefe, to unpack the chilling details of the Tylenol Murders. Along the way, they reflect on growing up in the 80s, the rise of tamper-proof packaging, and how this case still echoes today.   ⏱️ Timestamps: 00:00 – Intro + What Happened in 1982 00:30 – The Tragedy Begins: Mary...

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Brian Shaffer walked into a crowded bar and was never seen again. No exit footage. No suspects. No trace. In this episode of Sinisterum, we unpack one of the most chilling and unexplained disappearances ever caught on camera. Was it foul play, a tragic accident… or something far stranger? 👉 Like the episode? Smash that Like button. 🔔 Subscribe for weekly episodes covering true crime, unsolved mysteries, cults, and the paranormal. 💬 Drop your theories in the comments — we want to hear from you. 📧 Got a creepy or unsolved story of your own? Or a topic we should cover next? Email...

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In 2014, a family bought their dream home in a quiet New Jersey suburb. But before they could move in, the letters started arriving… signed by someone calling themselves The Watcher. This terrifying true story remains one of the most chilling and unsolved mysteries in modern suburban history.   In this episode of Sinisterum, we break down the timeline, the theories, and the disturbing psychology behind the anonymous stalker who knew everything about the house—and its new owners. Was it a neighbor? A hoax? Or something far darker?   If you think you’re safe in your own home…...

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In 1960, three teenagers were brutally murdered while camping near Lake Bodom in Finland. The Lake Bodom murders remain one of the most chilling unsolved murders in history. Was it a crime of passion, a ritualistic killing, or something even more sinister? This video dives deep into the Lake Bodom case, exploring every theory — from true crime facts to paranormal encounters and supernatural speculation.   Join Sinisterum as we revisit this haunting tale — the unsolved murder that still haunts Finland. With one survivor, no murder weapon, and disturbing levels of violence, the mystery...

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More Episodes

In 1982, seven people in the Chicago area died after taking Tylenol—each capsule laced with deadly cyanide. The case sparked national panic, triggered sweeping changes in packaging laws, and remains unsolved to this day.

 

In this episode, Caleb is joined by his brother Josh and their dad, Papa Jefe, to unpack the chilling details of the Tylenol Murders. Along the way, they reflect on growing up in the 80s, the rise of tamper-proof packaging, and how this case still echoes today.

 

⏱️ Timestamps:

00:00 – Intro + What Happened in 1982

00:30 – The Tragedy Begins: Mary Kellerman & the Janus Family

02:08 – Panic, Recall, and Nationwide Fear

03:47 – The Mysterious Extortion Letter

05:49 – What Packaging Was Like Before 1982

11:53 – Ronald Clark O’Brien and the Pixy Stix Poisoning

14:34 – The FDA’s Delayed Response

25:45 – Why Crimes Were Harder to Solve in the 80s

34:05 – Why the Prime Suspect Walked Free

44:00 – Final Thoughts + Protecting Your Family

 

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